Other Options for This Route
Washington, D.C. (Any) to Lisbon (LIS) in September from $618
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Washington, D.C. (Any) to Lisbon (LIS) in June from $993
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Washington, D.C. (Any) to Lisbon (LIS) in July from $1,046
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Best Flights starting from $648
from$648economy
Washington, D.C. (Any)
Mon, Aug 31
Roundtrip
Lisbon (LIS)
Tue, Sep 8
from$648economy
Washington, D.C. (Any)
Mon, Aug 31
Roundtrip
Lisbon (LIS)
Wed, Sep 9
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Other Options for This Route
Other Destinations
Washington, D.C. (Any) to Miami (MIA) in August from $49
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Washington, D.C. (Any) to Orlando (Any) in August from $56
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Washington, D.C. (Any) to Knoxville (TYS) in August from $89
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Washington, D.C. (Any) to Orlando (MCO) in August from $108
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Washington, D.C. (Any) to Las Vegas (LAS) in August from $115
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Washington, D.C. (Any) to Boston (BOS) in August from $117
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Flights from Other Cities
Birmingham (BHX) to Lisbon (LIS) in August from $89
From $89
Brussels (Any) to Lisbon (LIS) in August from $252
From $252
Tampa (TPA) to Lisbon (LIS) in August from $462
From $462
Las Vegas (Any) to Lisbon (LIS) in August from $467
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Montreal (YUL) to Lisbon (LIS) in August from $491
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Los Angeles (Any) to Lisbon (LIS) in August from $523
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✈️ Flight Guide: Washington, D.C. (Any) → Lisbon (LIS)
Complete travel information for your August journey
August is peak summer travel for routes from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS). Expect higher demand, increased fares, and full flights—book 3–8 weeks in advance for the best balance of price and choice. Key tips: set fare alerts for 'WASA to LIS flights', fly midweek to save on roundtrips, and use TSA PreCheck to speed through security. Nearby departures often serve travelers from Baltimore, Arlington, Alexandria, Annapolis, Philadelphia, and New York City who connect through the Washington area. For carry-on packing, prioritize light summer clothing, sunscreen and a compact travel adapter for EU outlets. CTA: Search cheap flights from Washington to Lisbon now and lock in August availability with flexible ticket options.
Departing from Washington, D.C. (Any) FAQs
To find affordable Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) flights in August, compare fares across carriers like TAP Air Portugal, United and American using flexible-date search tools and set price alerts. Booking 2–8 weeks in advance for summer travel often yields the best balance of availability and price; consider midweek departures and early-morning flights to reduce cost. Use OTAs and airline bundles to check for package discounts and monitor fare drops for last-minute deals.
Yes, there are typically direct flights from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) in August, with carriers such as TAP Air Portugal and seasonal services from major U.S. carriers. Direct overnight flights usually take about 7 to 8 hours; check airline schedules for daily or several-times-weekly routes during peak summer. If a nonstop is unavailable, popular one-stop connections route through New York (JFK/EWR), Boston (BOS) or Madrid (MAD).
Washington (All Airports) (WASA) terminals follow standard U.S. TSA screening: arrive 2–3 hours before international departures, have travel documents and liquids rules ready, and expect passport control only on arrival in Lisbon. Major Washington airports offer expedited screening with TSA PreCheck, lounges, and international check-in counters; check which specific Washington airport your airline uses. For August travel, anticipate higher passenger volumes and allow extra time for parking and shuttle transfers between area airports.
Roundtrip fares in August between Washington (All Airports) (WASA) and Lisbon Humberto Delgado Airport (LIS) commonly range from about $650 to $1,200 depending on booking time, airline, and whether the fare is nonstop or connecting. Booking 4–8 weeks ahead and avoiding weekend peak departures can lower costs; watch for flash sales and multi-airline itineraries that drop prices. Remember baggage fees and seat selection often add to the final ticket price on U.S. carriers and some European low-cost connecting segments.
Ground transport for Washington (All Airports) (WASA) includes Metrorail (for Reagan National), Amtrak and MARC commuter trains from nearby stations, ride-hailing services, and airport shuttles or long-term parking shuttles for Dulles and Baltimore airports. If you’re flying to Lisbon, plan travel time to the specific departure airport (Reagan National, Dulles, or Baltimore-Washington) and factor in potential August traffic during rush hours. Book shared shuttles or private car service in advance for a stress-free international departure.
August brings summer heat and increased passenger volumes at Washington (All Airports) (WASA), which can mean longer security lines and busier checkpoints—plan to arrive earlier and confirm flights the night before. Hot weather can lead to road congestion en route to the airport and occasional weather-related delays; check flight status and consider travel insurance for disruptions. Despite busy terminals, August also offers plentiful flight options to Lisbon Humberto Delgado Airport (LIS) as airlines operate peak-season frequencies.
August arrivals at Lisbon Humberto Delgado Airport (LIS) should expect sunny weather, busy terminals, and easy access to iconic Portuguese destinations. Plan to use the Metro or Aerobus for fast transfers to Baixa, Chiado, and Bairro Alto, or head straight to Cascais and Sintra for coastal and cultural day trips. Popular nearby cities and destinations commonly accessed from LIS include Sintra, Cascais, Porto, Faro (Algarve), Coimbra and Évora. Book accommodations and key experiences (trams, castle tours, and beach transfers) in advance to avoid sold-out dates during summer. CTA: Book your Lisbon ground transport and check live flight arrival times to make the most of your August visit.
Arriving at Lisbon (LIS) FAQs
From Lisbon Humberto Delgado Airport (LIS) you can take the Aerobus, Metro (Red Line connecting to the city center), taxis, ride-hailing services, or private transfers to downtown Lisbon. In August, expect higher tourist volumes so plan for slightly longer wait times for taxis and shared shuttles; the Metro is often the fastest and most cost-effective option during peak hours. If you're headed to nearby coastal towns like Cascais or Costa da Caparica, regional trains and buses are reliable and well-connected from central Lisbon.
August in Lisbon is hot and dry with average daytime temperatures between 25–30°C (77–86°F) and plenty of sunshine—pack lightweight clothing, a sunhat, sunscreen, and comfortable walking shoes. Evenings are mild near the river, but cooler along the Atlantic coast in Cascais or Costa da Caparica; bring a light layer for seaside dinners. Include a compact umbrella only if you prefer preparation, but heavy rain is uncommon in August.
As of August, standard Schengen area entry rules apply at Lisbon Humberto Delgado Airport (LIS): valid passport, and visa where required depending on nationality. Always check current Portuguese immigration guidance, airline entry requirements, and any health advisories before departure as temporary changes can occur during peak season. For U.S. citizens and many nationalities, short tourist stays typically do not require a visa but you must carry onward/return tickets and proof of accommodation.
From Lisbon Humberto Delgado Airport (LIS) you can reach Sintra, Cascais, the beaches of Costa da Caparica, and central Lisbon quickly for day trips; many travelers also visit the Alentejo coast or take a short domestic flight to the Algarve (Faro) or Madeira. August is ideal for beach day trips to Cascais and the Algarve but expect larger crowds—book popular attractions and train tickets early. These destinations are accessible by train, regional buses, or rental car from central Lisbon.
On arriving at Lisbon Humberto Delgado Airport (LIS) from Washington (All Airports) (WASA), you'll pass through passport control and baggage claim then customs. Immigration queues can be longer in August due to tourist season, so allow extra time if meeting ground transport; travel apps and signs in the terminal will help you find the Metro, Aerobus, and taxi ranks. Currency exchange and mobile SIM booths are available, but pre-purchasing an EU SIM or arranging airport pickup can streamline arrival.
Baggage rules for flights to Lisbon Humberto Delgado Airport (LIS) depend on the carrier and fare class—check your airline's allowance for carry-on size, checked bags, and excess baggage fees before flying from Washington (All Airports) (WASA). In August, airlines may enforce weight limits more strictly due to full flights; verify dimensions and consider priority boarding options for overhead space. If traveling with surfboards or beach gear for Lisbon-area beaches, book special baggage in advance to avoid surprises at check-in.
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August Events & Festivals Near Lisbon Humberto Delgado Airport (LIS)
August is a vibrant month for Portugal's summer events and music festivals, attracting many travelers flying from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS). While Lisbon itself hums with summer concerts, open-air cinema and neighborhood festas, notable national events in August include the MEO Sudoeste music festival (Zambujeira do Mar, Alentejo) and regional beach festivals in the Algarve. Travelers often combine Lisbon city breaks with festival trips to Cascais, the Alentejo coast and southern Portugal.
Best Time to Fly — Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS)
While August offers guaranteed summer weather in Lisbon, the best times to fly from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) for lower fares and fewer crowds are late spring (April–May) and early autumn (September–October). These shoulder seasons combine pleasant weather with reduced tourist volumes and often lower airfares. If you must travel in August, target midweek departures and book earlier in the booking window to avoid peak weekend premiums.
Direct vs Connecting Flights — WASA to LIS in August
Choosing between direct and connecting flights from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) depends on priorities: nonstops save time and minimize missed-connection risk but often cost more, while one-stop itineraries can be significantly cheaper and offer flexible routing through major hubs like New York, Boston, Madrid or London. For August travel, direct flights reduce travel fatigue and are worth the premium if you value time; connecting flights are best for budget-conscious travelers or those combining multi-city trips.
Airline Comparison: Flying from Washington (All Airports) (WASA) to Lisbon (LIS) in August
Key carriers on the Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) route include TAP Air Portugal (direct and connecting), United & American (some seasonal nonstop/one-stop service), Delta (connecting via European partners), and occasional seasonal services by other carriers. TAP typically offers competitive nonstop rates and direct service, while U.S. carriers may bundle frequent-flyer benefits and codeshare connections. Compare fare classes for baggage, seat selection, onboard meals and change/refund policies—these can make a cheaper base fare more expensive after add-ons.
Seasonal Travel Tips for August — WASA to LIS
Traveling from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) in August requires planning for heat, crowds and higher prices. Pack light summer clothing, sun protection and comfortable walking shoes for Lisbon's hilly streets. Book accommodations and popular attractions (trams, tram 28, Sintra palaces) well in advance, reserve airport transfers and consider refundable tickets for flexibility. Stay hydrated on arrival, and schedule afternoon downtime to avoid the hottest hours if exploring beaches or city sights.
Flight Time & Schedules — Washington (All Airports) (WASA) to Lisbon (LIS)
Typical nonstop flight time from Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) is approximately 7 hours 15 minutes to 8 hours depending on winds and routing. Return flights may vary slightly due to prevailing winds; expect similar durations. In August, carriers often operate daily or near-daily services on the route, with red-eye departures from Washington and morning arrivals in Lisbon to maximize daytime arrival. Connecting itineraries commonly transit through New York (JFK/EWR), Boston (BOS), Madrid (MAD) or London (LHR), adding 2–5 hours of total travel time depending on connection length.
Cheap Flights: Washington (All Airports) (WASA) to Lisbon Humberto Delgado Airport (LIS) in August
Strategies for scoring cheap flights between Washington (All Airports) (WASA) and Lisbon Humberto Delgado Airport (LIS) in August include booking 4–8 weeks ahead, using flexible-date search engines, subscribing to price alerts, and checking both nonstop and one-stop itineraries. Consider flying midweek or late-night departures, combining different carriers on outbound and return legs, and monitoring flash sales from transatlantic carriers. Use airport flexibility—departing from different Washington area airports—or check nearby primary airports like Baltimore, Philadelphia, Boston and New York City for competitive fares.
Tips
- Set fare alerts for 'WASA to LIS flights' and enable email or app push notifications.
- Compare multi-airline itineraries on meta-search engines to find lower-priced connecting flights.
- Use flexible date searches and +/- 3 day grids to locate cheaper midweek options.
- Consider nearby U.S. airports (BWI, PHL, BOS, JFK/EWR) for alternate routings that may be cheaper.
- Book refundable or flexible fares if traveling in August when schedule changes are more common.